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Finding the Fourth Proportional to 578,808.25, 867,875.85 and 219,006.85

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Solution

The fourth proportional to 578,808.25, 867,875.85 and 219,006.85 is: 328,382.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,808.25 : 867,875.85 = 219,006.85 : x
  2. Step 2: Convert to fraction form
    578,808.25/867,875.85 = 219,006.85/x
  3. Step 3: Cross multiply
    578,808.25x = 867,875.85 × 219,006.85
  4. Step 4: Simplify right side
    578,808.25x = 190,070,755,683.84
  5. Step 5: Solve for x
    x = 190,070,755,683.84/578,808.25
  6. Step 6: Final answer
    x = 328,382.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.